Liquid-measuring apparatus.



C. P. ROSS.

LIQUID MEASURING APPARATUS.

APPLICATION FILED JULY 13, 1912.

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By flu MONEY UNITED STATES PATENT oFFIoE WYLES P. ROSS, OF SEATTLE,WASHINGTON.

LIQUTD-MEASURING APPARATUS.

To all 'urhom 51- maj/ 0011 (cm Be it known that I, Cnaunns P. Ross,citizen of the United States, residing at Seattle, in the county of Kingand State of Washington, have invented certain new and usefulImprovements in Litpiid-Measuring Apparatus, of which ,the following isa specification. I

This invention relates to liquid measuring pulnp apparatus, and itsobject is the per fectiug of devices of this character whereby thenun-i-ber of parts is reduced, its operation simplified and renderedmore positive, and in. the provision of improved appliances whereby thevalve which controls the filling and emptying of the pump cylinder is in-operat.ion interlocked with the mechanism employed in actuating thepump piston.

The various features of my invention are illustrated in the accompanyingdrawings,

in which Figure 1 is a side elevation and Fig. 2 is a longitudinalvertical section of a liquid measurer embodying the resent invention.Fig. 3 is a fragmentary ront elevation of the same. Fig. 1- is a detailsectional view taken through 4-t of Fig. 3. i

The reference numeral 5 designates a pump cylinder having an opening inits lower end which connects witha passage 6 provided in a branch 7 of avalve body ,8. The tubular shank 9 of said body extends through thewall, indicated by 10, of a cask, barrel, or other vessel from whichliquid is to be drawn. The body 8 is bored to accommodate a rotary plugvalve 11 provided with a passage composed of two radially disposed parts12 and 12' which are arranged to afford communication between thepassage 6 and either the intake or discharge portions of the duct whichextend respectively through the shank 9 or the bibb l3 of the valvebody. Fitted Within the pump cylinder is a piston 14 having a tubularstem '15 which extends through the upper head 5 of the cylinder andthrough a frame 16 which is rigidly secured to the top of the latter.The frame 16, as shown, is formed with a bracket arm 16 which isapertured to receive a screw which engages in the wall '10 and serveswith the shank of the valve body for-securing the apparatus rigidlythereto. Extending into the upper end of the piston stem 15 is-a rod 17providedat its top with a' head 17 whereby the rod is grasped in hand ofthe operator for reciprocating the Specification of Letters Patent.

Patented July 8, 1913..

Application filed 13, 1912. Serial No. 700,256;

same to actuate the apparatus. its lower end, said rodis provided withacollar 17" which, upon being pulled upwardly with the rod, firstencounters the bushing 18secured' in the upper endof the stem 15 andthen causes the stem and piston to be elevated with the further upwardmovement of the rod. Rig'idly secured to said rod is a transverselyarranged bar 19 which is"secured to or formed integral with anuprightraek-bar 20 extending through giiides, such as 21, rigidlyconnected with the cylinder 5.

Along the front edge of the bar 20- itis provided with teeth 22 whichare successively engaged by a pawl 23 as the bar is moved up or downthrough the medium of the rod 17. The pawl 23 is housed in a casing 94connected to said cylinder and is fuIc-rurned- -1ntermediate its lengthto a pivotal pin 23.

A helical spring 25 is connected tothe pawl as shown in Fig. 1 and tendsto niaintainthe same in a horizontal ositi-on. Adjacent the upper andlower ends of the rackbar are recesses 26 and 26 wherein the pawl entersnear the termination of the downward and upward strokes of the rack barsto enable the pawl'to be first brought 'by the spring 25 into ahorizontal position in the respective recesses and then be tilted by therack bar in the subsequent strokes of the bar so as to engage thesuccessive teeth thereof and prevent any reverse movement of the rackbar during a stroke of the same, or until the pawl enters one or theother'of said recesses. At the rear" of said rack bar are groups ofteeth 27 and 27' with an intervening straight edge 28 therebetween.These groups of teeth are disposed to be engaged by the teeth of asector gear 29 during early and ultimate portions of the up and downstrokes of the rack-bar. That is to say, during the early part of itsupward stroke the teeth 27' of the lower group engage-the teeth of thesector ear to cause the latter to be swung upwai ly from the position into its full line position in the early portion of the followingdownstroke of the rack-bar. 30 represents the pin by which the sectorgear is pivotally connected to a stationary support 31. Between the pin30 and the outer end of the sector gear is a stud 32 whereby the gear isconnected to theupper inder. end 5.

end of a link 33 whose lower end is connected by a pin 34 provided on acrank arm 35 which is rigidly'secured to the valve 11. A spring 36interposed between the link 33 and the lug 37 of a bracket 37 tends topush the upper end of the link forward to present the gear 29 inposition to be engaged by the aforesaid groups of teeth.

The cylinder 5 is constructed to contain a predetermined quantity ofliquid, as a half pint for example, and each time the rod 17 is pulledup to its extreme height, that quantity of the liquid will be drawn intothe cylinder through the ofiice of the piston 14. Devices are providedupon the cylin der for recording the number of times the cylinder hasbeen thus utilized. To which end, 39 represents the casing of a meter(Fig. 3) having a plurality of wheels 40 severally marked with numeralswhich are progressively presented at a sight hole in the casing. Thesewheels are actuated from a shaft 41 which receives intermittent rotarymotion from a vertically reciprocating pawl 42 engaging the teeth of aratchet wheel 43 mounted on the shaft. The pawl 42 is pivotallyconnected to the upper end of a rod 44 whose lower end protrudes intothe cylinder as shown in Figs. 2 and 4.

The rod 44 is desirably inclosed in a tube 45 secured to and extendingthrough the cyl- A spring 46 acting between a partition 45 of the tubeand a collar 44 provided on the rod serves to restore the rod and theattached pawl to their lowermost, or normal, positions and subsequent totheir being elevated by the piston when pulled against the rod 44.

In the operation of the invention, when the rod 17 is raised or loweredit primarily is moved independently of the stem 15 and the piston 14 andin being thus .n'aoved it regulates the valve 11 so as to allow the lliquid to be drawn into the cylinder 5 by the piston when raised ordischarged from the cylinder by the piston when the same is pushed down.The valve is always operated when the piston is motionless, or viceversa.

What I claim, is

1. In apparatus of the class described, a pump cylinder open at itslower end, a two- Way valve at the open end of the cylinder, a pistonfor said cylinder, a hollow piston rod carried by said piston, a. rodextending gear engageable with the rack-bar near the ends of the strokesof the same, a link connecting the sector-gear with saidw'alve, andmeans whereby the rack-bar is prevented from being moved in reversedirection be-' fore the termination oif: successive strokes.

3. In apparatus of the class described, a cylinder having air/opening, avalve, a body for the valve and" provided with inlet and' dischargepassages and a branch passage connecting with the cylinder opening,means whereby said valve is operated to admit the liquid into thecylinder through said inlet I and branch passages, said means alsoserving to regulate the valve for the discharge of liquid through saidbranch and discharge passages, and being inoperative with respect to thevalve while the liquid is being drawn into or expelled from thecylinder. H

4. In apparatus of the class described, the combination of a pumpcylinder, an inlet and outlet valve therefor, a piston for saidcylinder, a tubular stem for thepiston, a rod extending into said stemand engageable therewith for reciprocating said piston operativeconnections between said rod and the valve whereby the latter may beoperated independently of the piston while the latter is motionless.

5. In apparatus of the class described, the combination ofa pumpcylinder, airinletand outlet valve therefor, a piston for said cylinder,a tubular stem fortlie piston,

a rod extending into said stem and engage- Signed at Seattle,Vashington, this 1st I day of July 1912.

CHARLES 1. ROSS.

Witnesses:

PIERRE BARNES, J. V. \VooowAnn.

